Chapter 16: Q16.62P (page 731)

For the reaction , $A B C + D ⇌ A B + C D$ , $∆ {H^{0}}_{r \times n} = - 55 k J / m o l$ $E_{a (f w d)} = 215 k J / m o l$ Assuming a one-step reaction,
(a) Draw a reaction energy diagram;
(b) Calculate Ea(rev); and
(c) Sketch a possible transition state if ABC is V-shaped

Short Answer

Expert verified

The reaction energy diagram is

b. The $E_{a (r e v)}$ is equal to 270 kJ/mol.

c. A transition occurs when an old bond (B-C) weakens and a new bond forms

(C-D). Sketch the reaction's transition stage as follows:

Step by step solution

Step 1: Draw a reaction energy diagram

It's an exothermic process. As a result, the energy of products will be smaller than that of reactants. The reaction's energy diagram will look like this:

Step 2: Calculation of Ea(rev)

Determine the $E_{a (r e v)}$ as follows:

Here $E_{a (r e v)}$ is the activation energy of the reverse reaction.

$E_{a (f w d)}$ is the activation energy of the forward reaction and $∆ H_{r \times n}$ is the change in enthalpy of the reaction.

$E_{a (r e v)} = E_{a (f w d)} - ∆ H_{r \times n} = 215 k J / m o l - (- 55 k J / m o l) = 270 k J / m o l$

Thus, the $E_{a (r e v)}$ is equal to 270 kJ/mol.

Step 3: Sketch a possible transition state

A transition occurs when an old bond (B-C) weakens and a new bond forms (C-D). Sketch the reaction's transition stage as follows:

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Contact time (min)	Percent (%) inactivation
0.00	0.0
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For the reaction , $A B C + D ⇌ A B + C D$ , $∆ {H^{0}}_{r \times n} = - 55 k J / m o l$ $E_{a (f w d)} = 215 k J / m o l$ Assuming a one-step reaction,
(a) Draw a reaction energy diagram;
(b) Calculate Ea(rev); and
(c) Sketch a possible transition state if ABC is V-shaped

Short Answer

Step by step solution

Step 1: Draw a reaction energy diagram

Step 2: Calculation of Ea(rev)

Step 3: Sketch a possible transition state

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For the reaction , ABC+D⇌AB+CD,∆H0r×n=-55kJ/molEa(fwd)=215kJ/mol Assuming a one-step reaction, (a) Draw a reaction energy diagram;(b) Calculate Ea(rev); and(c) Sketch a possible transition state if ABC is V-shaped

Short Answer

Step by step solution

Step 1: Draw a reaction energy diagram

Step 2: Calculation of Ea(rev)

Step 3: Sketch a possible transition state

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Organic Chemistry

Kinetics

Inorganic Chemistry

Chemical Reactions

Chemical Analysis

Ionic and Molecular Compounds

Study anywhere. Anytime. Across all devices.

For the reaction , $A B C + D ⇌ A B + C D$ , $∆ {H^{0}}_{r \times n} = - 55 k J / m o l$ $E_{a (f w d)} = 215 k J / m o l$ Assuming a one-step reaction,
(a) Draw a reaction energy diagram;
(b) Calculate Ea(rev); and
(c) Sketch a possible transition state if ABC is V-shaped